Exemplo n.º 1
0
        private void _repeat_times(NakoNodeRepeatTimes node)
        {
            int labelId = GetLableId();

            // (0)
            NakoILCode label_for_begin = createLABEL("TIMES_BEGIN" + labelId.ToString());
            NakoILCode label_for_end = createLABEL("TIMES_END" + labelId.ToString());

            // (1) 変数を初期化する
            result.Add(label_for_begin);
            addNewILCode(NakoILType.LD_CONST_INT, 1L);
            addNewILCode(NakoILType.ST_LOCAL, node.loopVarNo);
            // 何回実行するか回数を評価する
            Write_r(node.nodeTimes);
            addNewILCode(NakoILType.ST_LOCAL, node.timesVarNo);

            // (2) 条件をコードにする
            // i <= iTo
            NakoILCode label_for_cond = createLABEL("TIMES_COND" + labelId.ToString());
            result.Add(label_for_cond);
            // L
            addNewILCode(NakoILType.LD_LOCAL, node.loopVarNo);
            // R
            addNewILCode(NakoILType.LD_LOCAL, node.timesVarNo);
            // LT_EQ
            addNewILCode(NakoILType.LT_EQ);
            // IF BRANCH FALSE
            addNewILCode(NakoILType.BRANCH_FALSE, label_for_end);

            // (3) 繰り返し文を実行する
            _loop_check_break_continue(node.nodeBlocks, label_for_end, label_for_begin);
            Write_r(node.nodeBlocks);

            // (4) 変数を加算する (ここ最適化できそう)
            addNewILCode(NakoILType.INC_LOCAL, node.loopVarNo);

            // (5) 手順2に戻る
            result.Add(createJUMP(label_for_cond));
            result.Add(label_for_end);
        }
Exemplo n.º 2
0
        //> _repeat_times : _value REPEAT_TIMES _scope_or_statement
        //>               ;
        private bool _repeat_times()
        {
            TokenTry();
            if (!_value()) return false;
            if (!Accept(NakoTokenType.REPEAT_TIMES))
            {
                TokenBack();
                return false;
            }
            TokenFinally();
            tok.MoveNext(); // skip REPEAT_TIMES

            NakoNodeRepeatTimes repnode = new NakoNodeRepeatTimes();
            repnode.nodeTimes = calcStack.Pop();
            repnode.nodeBlocks = _scope_or_statement();
            repnode.loopVarNo = localVar.CreateVarNameless();
            repnode.timesVarNo = localVar.CreateVarNameless();

            this.parentNode.AddChild(repnode);
            lastNode = repnode;
            return true;
        }